/Engine/Plugins/Experimental/ColorCorrectRegions/Source/ColorCorrectRegions/Public/ColorCorrectRegionsSubsystem.h
Conditional inheritance to allowUColorCorrectRegionsSubsystemto inherit/avoid Editor's Undo/Redo in Editor/Game modes.
class FColorCorrectRegionsEditorUndoClient : public [FEditorUndoClient](API\Editor\UnrealEd\FEditorUndoClient)